Inseam shoe-sewing machine



W. C. MEYER INSEAM SHOE SEWING MACHINE Sept. 11, 1923. ,.--1,'467,586

Filed June 27, 1919 duly; WM

Patented Sept. 11, 1923;

UNE'E'ED STATES" ENE" WILLIAM CRISTVON MEYER, on BEVERLY, MAS-showtime,nssieitoa'ro' unirn'n SHOE MACHINERY COMPANY. OF PATEBSON, NEW anasnm aconronarron on NEW JERSEY.v

I Application fil'ed Julie 27,

To all whom it may concern:

Be it known that LWILLIAM C. MEYER, a citizen of the United States,residing at Beverly, in the county of Essex and State'of Massachusetts,have invented certain new' and useful Improvements in Inseam Shoe-Sewing Machines; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art towhich it ap pertains to make and use thesame;

This inventionrelates to sewing machines of the class employed insewing'inseams of shoes.'

The object of the invention is to improve the construction and mode ofoperation of certain parts of the work supporting mechanism inshoesewingmachines of the above class. a

With this object in view the features of the invention consist incertain novel and imroved constructions,arrangements and combinations ofparts hereinafter described and particularly pointed out in the claims,the advantages of which will be readilyunderstood and appreciated bythose skilled in the art. v

The features of the invention will be clearly understood from theaccompanying draw ings illustrating the invention in its preferred formand the following'detailed description of the constructions thereinshown.

In the drawingsFigure 1 is a view in side elevation of a portion of aninseam shoe sewiug machine embodying the invention; Fig. 2 is a detailview illustrating a portion of the mechanism shown in Fig. 1 partly inrear elevation and partly in section on the line 22 of said figure; Fig.3 is a detail sectional view taken substantially on the line 33 of Fig.2. I

The invention is illustrated in the drawings as embodied in a machinehaving,- except as'hereinafter described. substantially s5 the sameconstruction and mode-of operation as the machine illustrated anddescribed in applicants pending application, Ser. No. 165,107, filed-April 28, 1917. The machine shown in the drawings" comprises anoscillating curved hook needle 2, a work feeding awl ha looper 6, achannel guide 8, a thread finger 10 and a back gage 12. The back gage ismounted; on theforward endof aslide 14;

p which is moved forwardly to bring the'back gage into engagement withthe'shoes' by the INsEAM'sHoE-sEWiue 'ilufonriiin".

1919. ser'ra1'No'.'307,127.

action ofa spring 16. The slide 14 is locked in forward position duringa portion of each cycle of operations andiis retracted to carry the backgageout of engagement'with the shoe during the feeding of the shoe-bymeans of a clutch mechanism (not shown) which is actuated and controlledfrom alever"18 pivoted on ashaft 20 secured in the frame of the machine."All of the parts thus far de-' scribed have'substantiallythe sameconstruction, arrangement and mode of operation; as the correspondingparts of the machine illustrated and described in the above application. Y

The machine is provided with the usual back rest 22to "assist insupporting" the shoe during the sewing operation and the presentinvention is illustrated as embodied the back. rest mechanism.. The backrest' is mounted on the forward end of aslide 24 ar-' ranged'for forwardand rearward movement in suitable, guidesinthe frame of the ma chine.The slide 2 l is acted. upon by a coiledspring 26 coiled about a boss 28on the frame, one arm of, which engages a fixed abutment 30 on the frameand the other arm of ,which engages a pin 32 mounted on the slide 24 Theslide 24 isalso acted upon by a spring 34 one arm of which passesthrough an. arm 36 formed on a plate 40 secured to thev frame andengages at its end a projection42 on said plate; and .theother arm ofwhich engagesa pin 44 mounted on the slide. The springs 26 and 34normallypress the. slide 24 forwardly in its guides in the frame andcause the back rest to follow thecontour.of the shqeas the shoe ismanipulated to presentthe-sanie to the mechanism. The forward movementof theslidef 24. under the influence of thesprings-26, andS L islimitedbythe engagement of a projection. 1-6.,on the frame extending into'aslot 48- in the slide with the rear 'end of said slotl;

During the greater. part" of each cycle of operations and preferably, atall'times ex cept during the feeding movement of the shoe theloack restis,v locked; againstlreither forward, or rearwardmovement. When thesheets being fed the back rest is unlocked so that it can accommodateitself to-the position of the shoe. The locking. of the back restagainst'rearward movementcauses the same to furnish a rigidiabutinentftosupper (the shoe .jduring the {formation ,of

a stitch. The' slocliin'g ,of lthejbaclr" rest 1 against forwardmovement as the channel. guide isact-uated to disengage its acting end.from the bottom of the channel prevents,- the back rest from then movingforward. and displacing the shoe.

The locking mechanism for the back restcomprises a pair of clutch rolls50 and 52 resting on the upper surface of the slide: 24 and a lockinglever 54 pivoted at 56 on the frame, the forward end of which engagesand is supported by said rolls. The:

locking lever 54 is provided with an inclined contact face 58' forengagement with the roll 50 to lock the slide 24: against forwardmovement and with an oppositely in-- clined contact face 60 forengagement with the roll 52 to lock the slide'against rearward.movement. The rolls 50 and 52 are yieldingly held in positionlongitudinally of the locking lever by means of spring pressed. plungers62.

As long as the locking lever 54: is free to move upwardly the clutchrolls 50 and 52 allow the slide 24: to move forwardly or rearwardly. In'locking the slide 24 the locking lever 54: is' forced downwardlyagainst therolls 50 and 52 causing the rolls: to grip the slide. ,7Thelocking lever is 30, forced downwardly against the clutch rolls:

by means of a roll 64 mounted on one arm of a lever 66 pivoted on theshaft 20, said roll being arranged to engage the upper face of thelocking lever which is inclined slight-- ly upwardly from its reartoward its for-- ward end. The lever 66 is swung forwardly to cause theroll 64 to force the locking lever downwardly and is swung rearwardly torelease the locking lever. The lever 66- is actuated from the lever 18.The lever 66 is swung forwardly from the lever 18 as: the lower arm ofthe latter lever swings for-- wardly through a spring 68' interposedbetween a projection 70 on the lever 66 and a projection 72 on the lever18. The lever 66 is swung rearwardly as the lower armof the lever 18swings rea-rwardly through the engagement of an abutment screw 74threaded into a projection 76 on the lever 66 with theprojec'tion 72 onthe leve118. The parts are constructed. and arranged so that the:lockinglever 54'is actuated to lock the slide 24 and the'forwardmovement of thelever 66 is limited by the engagement of the roll 64 withthe locking lever before the lower arm of the leverlS completes itsforward movement, the spring 68 being compressed duringthe continuedforward movement of the lower arm on the latter lever. This insures theactuation of; the parts of the locking mechanism in a reliable manner tolock the slide 24' even when the parts have become considerably worn bycontinued use, and eliminates the necessity of frequent adjustment ofthe parts to take up. wear. The extent to which the '1ever'66 is swungrear- Having explained the nature and object of the invention, andhaving specifically described a machine embodying the invention in itspreferred form, what is claimed is:

l. An inseam shoe sewing machine having, in combination, stitch formingdevices including a curved hook needle, a forwardly and rearwardlymovable slide, a shoe support mounted to move with the slide, means formoving the slide longitudinally and means for locking the slide fromforward or rearward movement during each cycle of operations comprisingtwo locking rolls for engaging the slide, a locking member havingoppositely inclined faces arranged respec-- tively'to engage the rollssimultaneously,

, and means operatin to press said member toward the rolls and torelease the same during each cycle. I

2. An inseam shoe sewing machine having, in combination, stitch formingdevices including a curved hook needle, a forwardly and rearwardlymovable slide, a'shoe support mounted to move with the slide, means formoving the slide longitudinally andi means for locking the slide duringeach cycle of operations comprising a locking roll for engaging theslide, a locking lever having on one side an inclined face for engagingthe roll, a reciprocatory member ar ranged during its movement in onedirection to press the lever laterally toward the roll andduring itsmovement in the oppo sitedirection to release the lever. and means formoving said member yieldingly in the first direction and for moving saidmember in the latter direction.

An inseam shoe sewing'm'achine having, in combination; stitch formingdevices including a curved hook needle, a forwardly and rearwardlvmovable slide, a shoe support mounted to move with'the slide. means formoving the slide longitudinally and means for locking the slide duringeach cycle of operations comprising a locking roll for engaging theslide, a locking member having an inclined face for engaging the roll.an oscillatory lever, a roll carried by the lever and arranged to engagethe locking member and force the same toward the roll during themovement of the oscillatory lever in oneedirection and to releasethelocking member during the movement'of the oscillatory lever in theopposite direction, an actuating lever pivoted co-axially with theoscillatory lever, a spring interposed between said levers through whichthe oscillatory lever is moved from the actuating lever in the firstdirection, and an abutment screw threaded into the oscillatory lever andarranged to engage the actuating lever through which the oscillatorylever is moved from the actuating lever in the latter direction.

4. An inseam shoe sewing machine having, in combination, stitch formingdevices including a curved hook needle, a forwardly and rearwardlymovable slide, a shoe support mounted to move with the slide, means formoving the slide longitudinally and means for locking the slide duringeach cycle of operations comprising a locking roll for engaging theslide, a locking lever having an inclined face for engaging the roll, anoscillatory lever, a roll carried by the lever arranged to engage thelocking lever and force the same toward the roll during the movement ofthe oscillatory lever in one direction and to release the locking leverduring the movement of the oscillatory lever in the opposite direction,the locking lever having a contact face for engagement with the rollinclined in the direction of movement of the roll.

5. An inseam shoe sewing machine having, in combination, stitch formingdevices including a curved hook needle, a forwardly and rearwardlymovable slide, a shoe support mounted to move with the slide, means formoving the slide longitudinally, roll clutches for simultaneouslylocking the slide from forward or rearward movement during each cycle ofoperations comprising a look ing member having oppositely inclined rollengaging faces, and means operating to move said member into and out oflocking position during each cycle.

6. An inseam shoe sewing machine having, in combination, stitch formingdevices including a curved hook needle, a forwardly and rearwardlymovable slide, a shoe support mounted to move with the slide, means formoving the slide longitudinally, a slide clutching device, and means foractuating said device during each cycle of operations to lock the slidesimultaneously against forward and rearward movement.

WILLIAM GRISTVON MEYER.

